61306497 has 48 divisors (see below), whose sum is σ = 106704000. Its totient is φ = 34685280.

The previous prime is 61306489. The next prime is 61306501. The reversal of 61306497 is 79460316.

61306497 is a `hidden beast` number, since 6 + 1 + 3 + 0 + 649 + 7 = 666.

It is not a de Polignac number, because 61306497 - 2³ = 61306489 is a prime.

It is a super-2 number, since 2×61306497² = 7516973148822018, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61306417) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 196972 + ... + 197282.

It is an arithmetic number, because the mean of its divisors is an integer number (2223000).

Almost surely, 2^61306497 is an apocalyptic number.

It is an amenable number.

61306497 is a deficient number, since it is larger than the sum of its proper divisors (45397503).

61306497 is a wasteful number, since it uses less digits than its factorization.

61306497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483 (or 470 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 61306497 is about 7829.8465502205. The cubic root of 61306497 is about 394.3079201982.

The spelling of 61306497 in words is "sixty-one million, three hundred six thousand, four hundred ninety-seven".